Security readout for executives and security teams
Plain-English summary
CVE-2022-40107 affects the Tenda i9 firmware version named in the record. A network attacker could send malformed input that crashes or disrupts the device, creating a denial-of-service risk for wireless access or management availability.
Executive priority
Treat as a high availability risk for affected network infrastructure. Prioritize discovery and exposure reduction, then seek vendor remediation because no patch details are provided in the supplied sources.
Technical view
The record describes a buffer overflow in the Tenda i9 formexeCommand function, mapped to CWE-787. CVSS 3.1 is 7.5: network reachable, low complexity, no privileges, no user interaction, with high availability impact and no stated confidentiality or integrity impact.
Likely exposure
Exposure is most relevant where Tenda i9 devices running v1.0.0.8(3828) are reachable over a network, especially if management services are accessible from untrusted segments.
Exploitation context
The source bundle does not show CISA KEV listing or confirmed active exploitation. Public detail indicates denial of service via crafted input, but no reliable source here confirms exploitation in the wild.
Researcher notes
Evidence is sparse and primarily vulnerability-record based. The affected product metadata is incomplete, but the title and description identify Tenda i9 v1.0.0.8(3828). Avoid assuming broader Tenda product impact without additional sources.
Mitigation direction
- Identify any Tenda i9 devices and firmware version v1.0.0.8(3828).
- Check Tenda or device supplier guidance for fixed firmware or supported remediation.
- Restrict device management access to trusted administrative networks only.
- Replace unsupported or unpatchable affected devices where availability matters.
Validation and detection
- Inventory wireless infrastructure for Tenda i9 model and firmware version.
- Review network paths exposing device management services to untrusted users.
- Confirm whether vendor firmware or support guidance exists for this model.
- Monitor affected devices for unexplained crashes or availability interruptions.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-787: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2022-40107 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/splashsc/IOT_Vulnerability_Discovery/blob/main/Tenda/Tenda_i9/buffer_overflow_formexeCommand.mdCVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Write
Out-of-bounds Write represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.